Q. 34.5( 6 Votes )

In SONAR, we use<

Answer :

Sonar (originally an acronym for Sound Navigation and Ranging) is a technique that uses sound propagation (usually underwater, as in submarine navigation) to navigate, communicate with or detect objects on or under the surface of the water.

Ultrasonic waves: The waves with frequencies higher than 20,000Hz are termed as ultrasonics.

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